Question

In 2017, solar and wind electricity generation totaled 218 thousand megawatt hours (MWH) Wind generated 2 thousand MWH more than seven times that generated by solar energy. How much was generated by each sourc

Answer 1

W=191,000MWH S=27,000MWH

Explanation:

OK, let's W be wind electricity generated and S, solar electricity generate.

TOTAL GENERATED: 218,000mwh = W + S

RELATION BETWEEN W AND S: W = 2,000mwh + 7S

We have now two equations:

218,000 = W + S

W = 2,000 + 7S

Put th value of W into the 1st equation in order to find S:

218,000 = 2,000 + 7S + S

218,000 = 2,000 + 8S

218,000 - 2,000 = 8S

216,000 = 8S

S = 216,000/8

S = 27,000mwh

Now, we find W.

W = 2,000 + 7*27,000mwh

W = 2,000 + 189,000mwh

W = 191,000mwh